Muzzle recoil check for guns



July 27, 1937- N. E. METHLIN 2,088,380

MUZZLE RECOIL CHECK FOR GUNS Filed Nov. 29, 1935 fig-.1. 6 @E @SM1 Patented July 27, 1937 UNITED STATES MUZZLE RECOIL CHECK FOR GUNS Nicolas Emilien Methlin, Paris, France, assigner to Schneider & Cie., Paris, France, a company of France Application November 29, 1935, Serial No. 52,265 In France December 7, 1934 10 Claims.

The present invention relates to a device for reducing the length of recoil of guns, namely a device of the type known as muzzle recoil check.

'Ihere exist devices of this kind which comprise exclusively lateral discharge orifices, that is to say, orifices whereof the axial plane coincides with the horizontal axial plane of the gun barrel. Similar muzzleY recoil checks have already been proposed wherein the said lateral orifices are formed partly in a discharge nozzle fitted on the muzzle of the gun and partly in a terminal tubular member mounted on the nozzle.

This invention relates to improvements in the muzzle recoil checks constituted in this way, and

it is characterized by special forms of and methods of assembling the two principal elements (the nozzle and the tubular element), ensuring together an economical and practical construction and machining and at the same time considerable facility in the operations of assembling and dlsmounting as well as convenient replacement of Worn parts. f

According to the invention, the flared nozzle is flattened so that above and below it is bounded by plane walls wherein, however, are provided recesses for ensuring the connection between the muzzle of the gun barrel and the tubular outlet element. Furthermore, the terminal tubular element and the complementary elements of the escape orifices carried by the said tubular element are formed in a member which is tted into the nozzle simply by tongue and groove attachment and which may thus be slid into position. The slidable member carrying the tubular element is retained on the nozzle in a very simple manner by means of an internally screwthreaded ring screwed on an external thread on the nozzle and slid over the tubular element.

A practical form of construction of the invention is shown by way of example in the accompanying drawing, wherein:-

Figure 1 is a longitudinal sectional elevation showing the elements of the muzzle recoil check assembled together, the nozzle being screwed on the end of the muzzle of the gun barrel.

Figure 2 is a sectional plan on the line lI-II in Figure 1 with a portion shown in full, the muzzle recoil check being shown separate from the gun barrel.

Figure 3 is a cross-sectional elevation on the line III-III in Figure 2.

Figure 4, is a section on the yline IV-IV in Figure 1.

In these various figures, a denotes the part (Cl. Bil-14) of the muzzle recoil check which forms the nozzle and which by its internally screwthreaded cylindrical rear portion a1 is screwed on the muzzle b of the gun barrel, as shown in Figure 1. As shown by the cross-sections in Figure 3, the body 5 of the nozzle has the form of a flattened funnel, the internal wall comprising plane surfaces a2 and a3 above and below. Formed on the front end of the funnel are the rear portions a4 of the lateral discharge orifices, the complementary 10 portions of the latter being formed, as will be seen hereinafter, in the tubular element of the recoil check. Projecting from the body a of the nozzle are lateral pieces a5 of a length equal to the width of the mouth and provided with grooves 15 a6 for engagement by corresponding tongues carried by the complementary element constituting the tubular element. Formed on the side pieces a5 are lugs a'I whereof the plane internal faces form guiding and retaining means for the body 20 of the tubular element, while the cylindrical external surface is screwthreaded to receive an internally screwthreaded ring for assembling together the nozzle and the tubular element.

The tubular discharge elemente is formed as 25'* a sliding member in the rear portion whereof are provided the portions of the discharge orifices e1 which, together with the elements a* of the nozzle, complete the said oriiices. The body of the sliding member chas projecting tongues ca above 30 and below of a profile corresponding to that of the grooves as in the nozzle.`

The member carrying the tubular element, on which are formed the complementary portions c1 of the discharge orices, is mounted on the noz- 35 zle a. as will be seen by the simple engagement of the tongues e with the grooves aa in the front end portion of the nozzle.

For retaining the tubular element on the nozzle, there is provided an internally screwthreaded 40 ring d which, as stated hereinbefore, is screwed on the threads provided on the lugs aI of the nozzle, the ring comprising a portion of reduced diameter corresponding to the external diameter of the tubular element and mounted on the latter simply by a sliding t. as may be seen clearly in Figures 1 and 2. The assembly ring having thus been fitted and screwed on, it may be secured in position by a grub screw e such as shown 50 in Figure l.

-Of course, the assembly ring may comprise faces such as those indicated in dotted lines in Figure 4 in order to facilitate its manipulation, after the manner of an ordinary nut. 55

What is claimed isz- 1. A muzzle recoil check for gun barrels comprising a nozzle member adapted to be secured at its inner end to the muzzle of a gun barrelv and having an axially extending, flaring passageway therethrough, a terminal member housed within the outer end of said nozzle member havinga cylindrical passageway therethrough coaxial with said flaring passageway, means forming lateral discharge orices connecting with said flaring passageway through which the projectile propelling gases may escape, the outer end of said nozzle member having diametrically opposite openings formed in the side walls thereof through which said terminal member is slidable into assembled position, and means for detachably connecting said nozzle and terminal members together in assembled relation including a tongue and groove connection therebetween extending at rightl angles to the axis of said passageways.

2.` A muzzle recoil check for gun barrels comprising a nozzle member adapted to be secured at its inner end to the muzzle of a gun barrel and having an axially extending, flaring passageway therethrough, a terminal member housed within the outer end of said nozzle member having a cylindrical passageway therethrough coaxial with said flaring passageway, means forming lateral discharge orifices connecting with said flaring passageway through which the projectile propelling gases may escape, the outer end of said nozzle member having diametrically opposite openings formed in the side walls thereof through which said terminal member is slidable into assembled position, means for detachably connecting said nozzle and terminal members together in assembled relation including a tongue and groove connection therebetween extending at right angles to the axis of said passageways, and means for locking said members against relative movement therebetween in the direction of said tongue and groove connection.

3. A muzzle recoil check for gun barrels comprising a nozzle member adapted to be secured at its inner end to the muzzle of a gun barrel and having an axially extending, flaring passageway therethrough, a terminal member housed within the outer end of said nozzle member having a cylindrical passageway therethrough coaxial .with said flaring passageway, means forming lateral discharge orifices connecting with said flaring passageway through which the projectile propelling gases may escape, the outer end of said nozzle member having diametrically opposite openings formed in the side walls thereof through which said terminal member is slidable into assembled position, means for detachably connecting said nozzle and terminal members together in assembled relation including a tongue and groove connection therebetween extending at right angles to the axis of said passageways, and a locking ring for preventing relative movement between said members having a sliding t with the exterior of one of said members and a threaded connection with the other of said members.

4. A muzzle recoil check for gun barrels comprising a nozzle member adapted to be secured at its inner end to the muzzle of a gun barrel and having an axially extending, flaring passageway therethrough, a terminal member housed within the outer end of said nozzle having a cylindrical passageway therethrough coaxial with said flaring passageway, cooperating means carried by said nozzle and terminal members forming lateral discharge orifices connecting with said flaring passageway through which the projectile propelling gases may escape, the outer end of said nozzle member having diametrically opposite openings formed in the side walls thereof through which said terminal member is slidable into assembled position and which constitute portions of said lateral discharge orifices, and means for detachably connecting said-nozzle and terminal members together in assembled relation including a tongue and groove connection therebetween extending at right angles to the axis of said passageways.

5. A muzzle recoil check for gun barrels comprising a nozzle member adapted to be secured at its inner end to the muzzle of a gun barrel and having an axially extending, flaring passageway therethrough, a terminal member housed within the outer end of said nozzle member having a cylindrical passageway therethrough coaxial with said flaring passageway, means forming lateral discharge orifices connecting with said aring passageway through which the projectile propelling gases may escape, the outer end of said nozzle member having diametrically opposite openings formed in the side walls thereof through which said terminal member is slidable into assembled position, and means for detachably connecting said nozzle and Iterminal members together in assembled relation including a pair of grooves formed in the inner surface of said nozble member adjacent the outer end thereof and extending laterally thereacross at right angles to the axis of said flaring passageway and a pair of complementary tongues carried by said terminal member and adapted for sliding engagement with said grooves.

6. A muzzle recoil check for gun barrels comprising a nozzle member adapted to be secured at its inner end to the muzzle of a gun barrel and having an axially extending, flaring passageway therethrough, a terminal member housed within the outer end of said nozzle having a cylindrical passageway therethrough coaxial with said flaring passageway, means forming lateral discharge orifices connecting with said flaring passageway through which the projectile propelling gases may escape, the outer end of said nozzle member having diametrically opposite openings formed in the side walls thereof through which said terminal member is slidable into assembled position, means for detachably connecting said nozzle and terminal members together in assembled relation including a pair of grooves formed in the inner surface of said nozzle member adjacent the outer end thereof and extending laterally thereacross at right angles to the axis of said aring passageway and a pair of complementary tongues carried by said terminal member and adapted for sliding engagement with said grooves, and means for preventing relative movement between said tongues and grooves when said members are in assembled relation.

7. A muzzle recoil check for gun barrels comprising a nozzle member adapted to be secured at its inner end to the muzzle of a gun barrel and having an axially extending, flaring passageway therethrough, a terminal member housed within the outer end of said nozzle member having a cylindrical passageway therethrough coaxial with said flaring passageway, means forming lateral discharge orifices connecting with said flaring passageway through which the projectile propelling gases may escape, the outer end of said nozzle member having diametrically opposite openings formed in the side walls thereof through which said terminal member is slidable into assembled position, means for detachably connectlng said nomle and terminal members together in assembled relation including a pair of grooves formed in the inner surface of said nozzle member adjacent the outer end thereof and extending laterally thereacross at right angles to the axis of said aring passageway and a pair of comple.

lo mentary tongues carried by said terminal member and adapted for sliding engagement with said grooves, and means for preventing relative movement between said tongues and grooves when said members are in assembled relation including a locking ring having a sliding t with the exterior of said terminal member and a threaded connection with said nozzle member.

llfA'muzzleV recoil check forV gun Vbarrels comprising a flattened nozzle member adapted to be secured at its inner end to the muzzle of a gun barrel and having an axially extending, laterally ilarlng passageway therethrough, the upper and lower walls of said nozzle member being substantially iiat and parallel to one another, a terminal member housed within the outer end of said nozzle member having a cylindrical passageway therethrough coaxial with said flaring passageway and lof substantially the same diamet ter astheheight of said flaring passageway,nreans forming lateral discharge orices connecting with said flaring passageway through which the projectile propelling gases may escape, the outer end of said nozzle member having diametrically opposite openings formed in the side walls thereof through which said terminal member is slidable into assembled relation, and means for detachably connecting said nozzle and terminal members together in assembled relation including a tongue and groove connection therebetween extending 4o at right angles to the axis of said passageways.

9. A muzzle recoil check for gun barrels comprising a attened nozzle member adapted to be secured at its inner end to the muzzle of a gun barrel and having an axially extending, laterally 45 daring passageway therethrough, the upper and lower walls of said nozzle member being substantially fiat and parallel to one another, a terminal member housed within the outer end of said nozzle member having a cylindrical passageway therethrough coaxial with said aring psageway and of substantially the same diameter as the height of said flaring passageway.

means forming lateral discharge orices connect- 5 ing with said aring passageway through which the projectile propelling gases may escape, the outer end of said nozzle member having diametrically opposite openings formed in the side walls thereof through which said terminal member is l0 slidable into assembled relation, means for detachably connecting said nozzle and terminal members together in assembled relation including a tongue and groove connection therebetween extending at right angles to the axis of said passage- 15 ways, and a locking ring having a sliding t with the exterior of one of said members and a threaded connection with the other of said members.

10. A muzzle recoil check for gun barrels comprising a flattened nozzle member adapted to be 20 secured at its inner end to the muzzle of a gun barrel and having an axially extending, laterally flaring passageway therethrough, the upper and lower walls of said nozzle member being substantially flat and parallel to one another, a 25 terminal member housed within the outer end of said nozzle member having a cylindrical passageway therethrough coaxial with said flaring passageway and of substantially the same diameter as the height of said aring passageway, 30 means forming lateral discharge orifices connecting with said flaring passageway through which the projectile propelling gases may escape, the outer end of said nozzle member having diametrically opposite openings formed in the side walls 35 thereof through which said terminal member is slidable into assembled relation, and means for detachably connecting said nozzle and terminal members together in assembled relation including a pair of grooves formed in the flat walls of said nozzle member adjacent the outer end thereof and extending laterally thereacross at right angles to the axis of said flaring passageway, and a pair of complementary tongues carried by said terminal member and adapted for sliding engagement with said grooves.

NICOLAS EMILIEN MEI'HLIN. 

